However, the progenitor systems and explosion mechanism of SNe Ia still remain controversial [1]}. Two popular scenarios are the violent merger-triggered explosion of two WDs, known as the double-degenerate (DD) scenario [2]}, [3]}, and the accretion-triggered explosion of a WD with a nondegenerate companion, known as the single-degenerate (SD) scenario [4]}, [5]}, [6]}. In general, the detection of signatures of circumstellar material (CSM) around some SNe Ia supports the SD scenario [7]}, [8]}, [9]}, [10]}, [11]}, [12]}, [13]}, [14]}, though some theoretical studies show that the CSM could be also produced in the DD scenario [15]}, [16]}. On the other hand, there is also evidence for nondetections of companion signatures for some SNe Ia, thus favoring the DD scenario [17]}, [18]}, [19]}, [20]}.
